Unique Statistics:

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Clinical Sciences, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran; Tel: 0098-9128902920; E-mail: mehrdad.sami@yahoo.com

Abstract

Background:

Antimicrobial resistance is an important factor threatening human health. It is widely accepted that antibiotic resistant bacteria such as Escherichia coli (E. coli) released from humans and animals into the water sources, can introduce their resistance genes into the natural bacterial community.

Objective:

The aim of this study was to investigate the prevalence of blaTEM, blaCTX, blaSHV, blaOXA and blaVEB associated-antibiotic resistance among E. coli bacteria isolated from different water resources in Iran.

Methods:

The study contained all E. coli strains segregated from different surface water sources. The Kirby-Bauer method and combined discs method was determined in this study for testing antimicrobial susceptibility and strains that produced Extended-Spectrum Beta Lactamases (ESBL), respectively. DNA extraction kit was applied for genomic and plasmid DNA derivation. Finally the frequency of resistant genes including blaTEM, blaCTX, blaSHV, blaOXA and blaVEB in ESBL producing isolates were studied by PCR.

Results:

One hundred E. coli strains were isolated and entered in the study. The highest antibiotic resistance was observed on clindamycin (96%). Moreover, 38.5% isolates were ESBL producers. The frequency of different ESBLs genes were 37%, 27%, 27%, and 25% for blaTEM, blaCTX, blaSHV, and blaOXA, respectively. The blaVEB wasn’t found in any isolates.

Conclusion:

The study revealed a high prevalence of CTX-M, TEM, SHV and OXA genes among E. coli strains in surface water resources. In conclusion, these results raised a concern regarding the presence and distribution of these threatening factors in surface water sources and its subsequent outcomes.

About the Editor

Biography of Irina V. Kiseleva

Dr. Kiseleva obtained her MS in Microbiology from St Petersburg (SPb) State University, RF, PhD in Virology from Institute of Influenza, SPb, RF and DSci in Virology in Institute of Experimental Medicine (IEM), SPb, RF. She holds a position of Section Chief in IEM. She is also a Professor of SPb University, RF. She published over 280 publications including 40 RF patents. Currently she is the Editor-in-Chief of TOMICROJ, published by Bentham Science Publishers.

Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russia

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Three more Bentham Science Journals indexed in The Emerging Sources Citation Index (ESCI) by Thomson Reuters

News release date: June 6, 2017

Description:

Thomson Reuters has selected the following Journals published by Bentham Science Publishers for coverage in The Emerging Sources Citation Index (ESCI). ESCI is a new index launched by Thomson Reuters, extending the universe of publications in Web of Science to include high-quality, peer-reviewed publications of regional importance and in emerging scientific fields.

The Emerging Sources Citation Index (ESCI) is a new index launched by Thomson Reuters, extending the universe of publications in Web of Science to include high-quality, peer-reviewed publications of regional importance and in emerging scientific fields.

Adolescent Psychiatry publishes original research, critical reviews of topics relevant to practitioners, clinical observations with analysis and discussion, analysis of philosophical, ethical or social aspects of the fields of psychiatry and mental health, case reports with discussions, letters, and position papers.

Clarivate Analytics (formerly Thomson Reuters Intellectual Property & Science business) has selected the Bentham Science journal Current Molecular Pharmacology for coverage in the Science Citation Index (SCI). The Science Citation Index (SCI) is a citation index originally produced by the Institute for Scientific Information (ISI) and is made available online through different platforms, such as the Web of Science and SciSearch.

Current Molecular Pharmacology publishes the latest developments in cellular and molecular pharmacology with a major emphasis on the mechanism of action of novel drugs under development, innovative pharmacological technologies, cell signaling, transduction pathway analysis, genomics, proteomics, and metabonomics applications to drug action.

Clarivate Analytics (formerly Thomson Reuters Intellectual Property & Science business) has selected the Bentham Science journal Current Psychiatry Reviews for coverage in The Emerging Sources Citation Index (ESCI). ESCI is a new index, extending the universe of publications in Web of Science to include high-quality, peer-reviewed publications of importance in emerging scientific fields.

Current Psychiatry Reviews publishes frontier review articles and guest edited issues dedicated to clinical research on all the latest advances on clinical psychiatry and its related areas e.g. pharmacology, epidemiology, clinical care and therapy. The journal is essential reading for all clinicians, psychiatrists and researchers in psychiatry.

MEDLINE indexes Pharmaceutical Nanotechnology

News release date: March 10, 2017

Description:

Pharmaceutical Nanotechnology, an important journal published by Bentham Science, is accepted to be included in MEDLINE. MEDLINE is the U.S. National Library of Medicine® (NLM) premier bibliographic database that contains more than 23 million references to journal articles in life sciences with a concentration on biomedicine. A distinctive feature of MEDLINE is that the records are indexed with NLM Medical Subject Headings (MeSH®). For more information, view: https://www.nlm.nih.gov/pubs/factsheets/medline.html/

Pharmaceutical Nanotechnology publishes original manuscripts, reviews, thematic issues, rapid technical notes and commentaries that provide insights into the synthesis, characterization and pharmaceutical (or diagnostic) application of materials at the nanoscale.

Bentham Science among Top 14 Publishers indexed in Scopus

News release date: February 08, 2017

Description:

Scopus recently released information about the published content hosted by the service. According to the information presented, Bentham Science is among the top 14 publishers which have their publications indexed in Scopus.

Bentham Science will continue to expand on its product portfolio in line with its mission to facilitate the publication of latest research around the globe. We are also committed to increasing the exposure of researchers who publish their work with us.

About Scopus

Scopus is the largest abstract and citation database of peer-reviewed literature: scientific journals, books and conference proceedings. Delivering a comprehensive overview of the world's research output in the fields of science, technology, medicine, social sciences, and arts and humanities, Scopus features smart tools to track, analyze and visualize research.

Bentham Science Publishers is a major publisher of over 100 peer reviewed journals and 600 eBooks. Some of the notable Bentham Science journals that have received ISI Impact factor (IF) rankings are Current Neuropharmacology (IF 3.75) Current Cancer Drug Targets (IF 3.71), Recent Patents on Anti-Cancer Drug Discovery, (IF 3.53), Current Medicinal Chemistry (IF 3.46) among other titles.

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